Fig. 1

First appearance and range of selected genera of Cyrtocrinida. Species of a given genus are linked by solid lines; dashed lines indicate inferred generic relationships. Data according to Hess (2006), Hess in Hess and Messing (2011), and Hess (2012). Castaneacrinus and Fusicrinus are known from brachials only. Occurrence of Cyathidium in the Tithonian according to Sieverts-Doreck (1951)